TY - JOUR
T1 - Free space optical communications through clouds
T2 - Analysis of signal characteristics
AU - Wu, Binbin
AU - Hajjarian, Zeinab
AU - Kavehrad, Mohsen
PY - 2008/6/10
Y1 - 2008/6/10
N2 - Free space optical communications (FSOC) is a method by which one transmits a modulated beam of light through the atmosphere for broadband applications. Fundamental limitations of FSOC arise from the environment through which light propagates. This work addresses transmitted light beam dispersion (spatial, angular, and temporal dispersion) in FSOC operating as a ground-to-air link when clouds exist along the communications channel. Light signals (photons) transmitted through clouds will interact with the cloud particles. Photon-particle interaction causes dispersion of light signals, which has significant effects on signal attenuation and pulse spread. The correlation between spatial and angular dispersion is investigated as well, which plays an important role on the receiver design. Moreover, the paper indicates that temporal dispersion (pulse spread) and energy loss strongly depend on the aperture size of the receiver, the field-of-view (FOV), and the position of the receiver relative to the optical axis of the transmitter.
AB - Free space optical communications (FSOC) is a method by which one transmits a modulated beam of light through the atmosphere for broadband applications. Fundamental limitations of FSOC arise from the environment through which light propagates. This work addresses transmitted light beam dispersion (spatial, angular, and temporal dispersion) in FSOC operating as a ground-to-air link when clouds exist along the communications channel. Light signals (photons) transmitted through clouds will interact with the cloud particles. Photon-particle interaction causes dispersion of light signals, which has significant effects on signal attenuation and pulse spread. The correlation between spatial and angular dispersion is investigated as well, which plays an important role on the receiver design. Moreover, the paper indicates that temporal dispersion (pulse spread) and energy loss strongly depend on the aperture size of the receiver, the field-of-view (FOV), and the position of the receiver relative to the optical axis of the transmitter.
UR - http://www.scopus.com/inward/record.url?scp=49649084940&partnerID=8YFLogxK
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U2 - 10.1364/AO.47.003168
DO - 10.1364/AO.47.003168
M3 - Article
C2 - 18545290
AN - SCOPUS:49649084940
VL - 47
SP - 3168
EP - 3176
JO - Applied Optics
JF - Applied Optics
SN - 1559-128X
IS - 17
ER -